The level of
knowledge and performance of Good Clinical Practices of the participant investigators in clinical tests was carried out in five hospitals, on February-April, 2006. The knowledge level was evaluated by means of an inquiry,
classifying the investigators as expert, scanty expert and not expert. The performance was evaluated as adequete
or inadequate, by means of interviews and Quality Control Visits (QCV). According to the results of interviews
and QCV 67% of the participants were classified as experts. With respect to performance, 57.6% were inadequate. The results demonstrate that the preparation of these professionals in this mater is still insufficient and that
is imminent the necessity of a qualification.